The analysis of data and uncertainty of the test upon different simulant target properties and atmospheric condition has proved that noncooperative regulable attenuation method and setting described in the paper can achieve a quantitative output 不同目标特性、不同大气条件下的地面性能验证实验数据和精度理论分析结果均表明，非合作目标可调衰减法可以实现对激光高度计最大测程的定量化验证。
Abstract : a portable digital instrument for multi - using ( multi - parameter ) is introduced . it includes the function of vacuometer , atmospheric pressure altimeter , thermometer ( environment ) and pressuremeter ( for example the standard pressuremeter of sphygmomanometer calibration ) 文摘:介绍一种便携、数字式的多用途仪器，它具有真空度计、气压高度计、 （周围环境）温度计以及压力计(例如可作为校准血压计的标准器)等功能。
According to the minimum detectable power required by the spaceborne laser altimeter for 200km maximum range and the analysis result of the effect between the maximum range and the equation ' s each parameter , the specifications for noncooperative regulable attenuation setting were fixed on 根据月球探测激光高度计实现200km所需的最小可探测功率，各影响因子与最大测程关系的分析，确定非合作目标可调衰减法装置的技术指标。
The following are the main works : the maximum likelihood estimator ( mle ) was studied in detail , and the ocean return curve based on the sub - optimal maximum likelihood estimator ( smle ) was first obtained in china through the airborne flight experiment ( 2 )深入研究了星载雷达高度计最大似然跟踪算法，并完成了基于准最大似然算法的高度计跟踪器的研制，通过机载校飞实验，在国内第一次获得了基于准最大似然算法的海洋回波跟踪曲线。
Radar altimeter is a kind of very important microwave sensing instrument for observing the earth , and there are a lot of key technologies involved in the high resolution spaceborne radar altimeter ( hrsbralt ) . the principle of hrsbralt , the acquisition and track methods , the if simulation , the closed loop internal calibration method , the pulse repeat frequency ( prf ) design , and the ocean - land compatible altimeter design are studied in this dissertation 雷达高度计是一种重要的微波遥感仪器，本文就高分辨率星载雷达高度计的工作机理、跟踪方法、大时带积在轨闭环内校准以及海陆兼容等内容进行了深入的研究，具体包括以下八个方面的内容： ( 1 )深入研究了星载雷达高度计的工作机理，并对典型雷达高度计系统进行了分析。
The seasonal cycle and interannual variation of sea surface height from topex / poseidon and ers - 1 / 2 are analyzed in tropical pacific and indian oceans in this study , and they are compared with those from a coupled climate model fgcmo in order to assess the ability of the model to simulate seasonal cycle and interannual variation in sea level height 本文利用卫星海面高度计资料，分析了赤道太平洋和印度洋海面高度变化的季节和年际变化特征，并与一个耦合气候系统模式fgcmo模拟的海面高度进行比较，评估模式模拟海面高度季节和年际变化的能力。
Considering the fact that the analog system is not so good as the digital system on the respect of variation of bandwidths and on the respect of switch between different bandwidths . this paper proposes to adopt the dds ( direct digital synthesis ) technique that produces chirp signals of different bandwidths to improve the situation of losing tracks for the ocean satellite altitude indicator in measuring coarse surfaces 现在的雷达基本上采用模拟系统产生线性调频信号，由于模拟系统在带宽变化方面和不同带宽间切换方面不如数字系统，本文采用dds （ directdigitalsynthesis ）技术产生不同带宽的线性调频信号以改善海洋卫星高度计在测量粗糙表面时存在的失锁现象。
The assimilation scheme uses a blending approach based on optimal linear interpolation . the improvement is 45 % for the phase - lag of s2 after assimilating the altimetric data of the crossover points , while the correction for the diurnal constituents is not so good as for semidiurnal constituents 利用基于最优插值法的混合法将交叉点的调和常数同化到动力模式中，同化后s _ 2分潮的迟角精度改进最大，可以改进45 ，结果显示高度计资料的分析结果对模式结果的精度影响很大。
The maximum range is the most important specification for a laser altimeter and 200km is the required level for the spaceborne laser altimeter in the lunar resources survey . in the paper , one kind of method and setting characterizing the laser altimeter ' s performance aiming at the specification of maximum range - noncooperative regulable attenuation was put forward and founded 中科院知识创新重大方向?月球资源探测卫星激光高度计，要求实现200km的对月测距能力，本文以地面验证激光高度计最大测程指标为目标，提出并建立一种激光高度计性能验证方法?非合作目标可调衰减法和装置。
Icc will rise to 490 metres , making it hong kong s tallest building and the world s third tallest in terms of usable floors . it will also have the most advanced design and intelligent facilities . the 10th to 22nd floors will contain about 450 , 000 square feet of floor area and are scheduled for completion between 2007 and 2010 楼高490米的环贸广场，高踞全球高厦第三位以可用楼层高度计算，拥有最先进设计及高智能设施，将于2007年至2010年分阶段落成，现率先推出10楼至22楼约45万平方尺楼面进行预租。
